I’ve noticed that when you hear the sound and look up, the plan often isn’t there. It is always in front of where the sound is.
In: Physics
Light takes tens of microseconds to get to you, while sound takes tens of seconds to get to you. So, when you look up, you see the plane as it was microseconds ago (basically now), but the sound it emits is still way above you – the sound from 30 seconds ago is just now getting to you, making it seem like it’s coming from behind the plane.
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